212253930 has 48 divisors (see below), whose sum is σ = 630699264. Its totient is φ = 48515040.

The previous prime is 212253911. The next prime is 212253947. The reversal of 212253930 is 39352212.

212253930 is a `hidden beast` number, since 2 + 122 + 539 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 212253894 and 212253903.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167826 + ... + 169085.

It is an arithmetic number, because the mean of its divisors is an integer number (13139568).

Almost surely, 2^212253930 is an apocalyptic number.

212253930 is an abundant number, since it is smaller than the sum of its proper divisors (418445334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212253930 is a wasteful number, since it uses less digits than its factorization.

212253930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336931 (or 336928 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 212253930 is about 14568.9371609600. The cubic root of 212253930 is about 596.5111694222.

The spelling of 212253930 in words is "two hundred twelve million, two hundred fifty-three thousand, nine hundred thirty".